What are trees?
Are the leaves that fall from trees in Autumn rubbish?
If a tree falls in a forest and no one is around to hear it, does it make a sound?
What would happen if all the trees in the world disappeared?
Why are redwood trees so big if they live in the same conditons as regular trees?
What would the earth be like if all the trees died?
Why do fruits from the same tree some times taste different?
Why do some leaves change colors in the Autumn?
Why are trees important?